David kennedy



(No Model.)

D. KENNEDY, Jr. GLAY GRINDING MACHINE.

No. 407,219. Patented July 16, 1889.

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if m4 Inventor. Jaw dd i fine f U ITED STATES PATENT OFFICE,

DAVID KENNEDY, .IR., OF ERIE, PENNSYLVANIA, ASSIGNOR OE ONE-HALF TOERASTUS B. LIPTON, OE SAME PLACE.

CLAY-GRINDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 407,219, dated July 16,1889.

Application filed August 20, 1888.

T0 aZZ whom it may concern:

Be it known that I, DAVID KENNEDY, J12, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsyl- Vania,have invented certain new and useful Improvements in Clay-GrindingMachines; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, forming part of this specification.

My invention consists in the improvements in clay-grinding machineshereinafter set forth and explained, and illustrated in the accompanyingdrawings, in which Figure 1 is a perspective view of my machine with thehopper removed. Fig. 2 is a longitudinal section of same on line so .1:in Fig. 1.

Iiike letters refer to like parts in both of the figures.

In the construction of myinvention shown, A is the frame-work of themachine, in which is mounted a corrugated grinding cylinder or roller B,the shaft 1) of which is provided with a driving-pulley C and fiy-wheelI). The cylinder B is preferably made with radial V- shaped depressionsE E, as and for the purpose hereinafter set forth.

In grooves I in the side piece A and the center piece a of the frame A,I place an adadjustable grindingjaw G, adapted to be moved toward andaway from the grindingcylinder B by means of an adjustable screw II, theend 9 of the jaw G being grooved vertically and corrugated horizontallyto correspond with the grooves E and corrugations in the cylinder B, soas to form a grindingsurface therewith. On the top of the jaw G, I placea reciprocating block I, which travels on the tracks a. The end J of theblock I is likewise grooved vertically and corrugated horizontally tocorrespond with the grooves E and corrugations in the cylinder B. At thepoint Z on the opposite end K of the block I, I secure a pitman L, whichconnects with and is operated by a crank M on the shaft N,

Serial No. 283,265. (No model.)

which is supported at one end on the side of the frame A driven by thesprocket-chain 0 from the wheel Q on the intermediate shaft Q, which isalso supported at one end on the side of the frame A Said shaft Q isdriven by a belt R from a pulley R on the main shaft b to the belt-wheelS on the shaft Q. The object of using a belt at this point. is so thatin case the cylinder B, which runs at a high rate of speed, catches astone between it and the face of the reciprocating block I, the belt Rwill slip before the pressure is so great upon the cylinder as to causea breakage of the parts.

011 the frame A, over and inclosing the upper part of the cylinder B, Isecure a hopper 3, into which the clay is fed to the machine.

In operation the grinding-jaw G is set up as close to the face of thecylinder as desired. The clay is then fed into the hopper B. Thegrinding-cylinder B, rotating in the direction of the arrow at a highrate of speed, carries the clay down and out between the roller and theend g of the grinding-jaw G. Meanwhile the reciprocating block I isbeing moved by the crank M up to and back from the cylinder B, so thatany lumps or small stones are broken up between the corrugated end .Ithereof and the cylinder B, from whence they pass down and out betweenthe end g of the jaw G and the cylinder 13, where they are reduced tothe proper degree of fineness.

Having thus fully described my invent-ion, so as to enable others tomake and use the same, what I claim as new, and desire to secure byLetters Patent of the United States, is

1. The combination, in a claygrinding ma chine, of a rotating corrugatedgrinding-cylinder and a corrugated grinding-jaw, with a reciprocatingcrushing-block operating on tracks above the grinding-jaw, substantiallyas and for the purpose set forth.

2. The combination, in a clay-grinding machine, of an annularly-groovedand longitudinally-corrugated grinding-cylinder, with an adjustablevertically-grooved and horizontally-corrugated grindingjaw and avertically-grooved and horizontally-corrugated reciprocatingcrushing-block, operating upon ing-cylinder B, the hopper B, and theadjustable grinding-jaw G, having a grooved corrugated grinding-face g,with the reciprocating block I, having a grooved and corrugatedcrushing-face J, the pitInan L, crank M, and shaft N for operating saidreciprocating block I, substantially as and for the purpose setforth.

In testimony whereof I'affix my signature in presence of two Witnesses.

DAVID KENNEDY, JR.

Witnesses:

H. M. STURGEON, WM. P. HAYES.

